Protesters break off from main march to clash with police at Milan Expo

Dozens of people are protesting the opening of Milan’s Expo 2015, torching parked cars, smashing bank and shop windows and clashing with riot police.

Protesters split off from a generally non-violent march a few hours after Italian Premier Matteo Renzi inaugurated Expo, which runs until October and features pavilions from nations large and small, rich and poor.